fuckyeahfluiddynamics:

The hummingbird has long been admired for its ability to hover in flight. The key to this behavior is the bird’s capability to produce lift on both its downstroke and its upstroke. The animation above shows a simulation of hovering hummingbird. The kinematics of the bird’s flapping—the figure-8 motion and the twist of the wings through each cycle—are based on high-speed video of actual hummingbirds. These data were then used to construct a digital model of a hummingbird, about which scientists simulated airflow. About 70% of the lift each cycle is generated by the downstroke, much of it coming from the leading-edge vortex that develops on the wing. The remainder of the lift is creating during the upstroke as the bird pulls its wings back. During this part of the cycle, the flexible hummingbird twists its wings to a very high angle of attack, which is necessary to generate and maintain a leading-edge vortex on the upstroke. The full-scale animation is here. (Image credit: J. Song et al.; via Wired; submitted by averagegrdy)

fuckyeahfluiddynamics:

The hummingbird has long been admired for its ability to hover in flight. The key to this behavior is the bird’s capability to produce lift on both its downstroke and its upstroke. The animation above shows a simulation of hovering hummingbird. The kinematics of the bird’s flapping—the figure-8 motion and the twist of the wings through each cycle—are based on high-speed video of actual hummingbirds. These data were then used to construct a digital model of a hummingbird, about which scientists simulated airflow. About 70% of the lift each cycle is generated by the downstroke, much of it coming from the leading-edge vortex that develops on the wing. The remainder of the lift is creating during the upstroke as the bird pulls its wings back. During this part of the cycle, the flexible hummingbird twists its wings to a very high angle of attack, which is necessary to generate and maintain a leading-edge vortex on the upstroke. The full-scale animation is here. (Image credit: J. Song et al.; via Wired; submitted by averagegrdy)

(via boingboing)

kierongillen:

n-a-blue-box:

deepbreathsanddeath:

This is a real panda
China has this “panda diplomacy” and this one will be sent to Japan as an friendship envoy. For the safety reason he sits as a passenger with his feeder, not in a cage. Fastening the seat belt, wearing a diaper, eating bamboos

this makes me really happy

Typical pandering.

panda: “what’cha watching there? is it kung fu panda? it fucking is, isn’t it?”

Bank teller, reading the name on my business account: “‘Machines of Death’? What is that?”
Me: “We make electric chairs.”
Teller: “Oh…”
(There is a long pause as she considers this.)
Teller: “You’re not…lying, are you?”
Me: “Yeah, I am lying.”
(The teller laughs with relief.)
Teller: “Ha ha…”
Me: “We make syringes for lethal injections.”
Teller: “…ha ha, yeah, OK. Fool me once!”

Perhaps the best conversation I have ever had????? (via davidmalki)

archiemcphee:

This awesome arboreal dwelling is the Living the High Life Tree House created by Blue Forest, a British tree house design and construction firm. It’s a luxury family-sized complex featuring two separate tree houses, one for kids and one for their parents. The elevated dwellings are connected by a network of rope bridges which also lead to an adventure play area and an assault course, the latter of which is also accessible via an 80-yard zip line.

It may look rustic, but this is a top-of-the-line tree house. The kids’ house features three medieval towers, and inside one of them a concealed hatch in the upper floor leads to a secret game room containing a plasma TV and video game console. Meanwhile the grown-ups’ treehouse features a conical thatched roof and interior walls made of hand-split oak shingles and cedar tongue-and-groove boards. Inside there’s a kitchen (complete with plenty of wine storage), bathroom, and a large open living area for treetop entertaining. The complex also features accommodations for guests of the family.

Head over to the Blue Forest website to check out more of their amazing custom-built tree houses.

[via designboom]

(via piratejenne)